Heroku is shifting to a sustaining engineering model. Here’s what that means, whether you should migrate, and how the top alternatives compare.

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Salesforce has announced Heroku is moving to a sustaining engineering model (maintenance mode), prompting concern among developers. The author argues there's no immediate urgency to migrate — most apps should stay on Heroku until at least 2027. For those planning to migrate, Render is recommended as the closest like-for-like replacement with 20-30% cost savings, Fly.io offers more flexibility but steeper complexity, Railway is not recommended due to poor compute performance, and self-hosted solutions are overkill for typical Heroku users. The author also announces a 'Judoscale on tour' initiative where they'll migrate their own 3,000+ RPS production app to each platform and document the experience.

Heroku: What’s Next

Fly.io: A Little More Complicated, A Little More Interesting